Causes of melting of high-voltage current fuse

The high -voltage current fuse has abnormal melting. We must carefully analyze the cause of the fuse and find out the problem to better protect our electricity safety. The following are the reasons for the melting of high -voltage current fuse:
    1. Short -circuit failure or overload running and normal melting;
    2. The melt was used for too long, and the melt was interrupted due to the high temperature during oxidation or operation, which made the melt characteristics change;
    3. Mechanical damage during the melt is installed, which makes the cross -sectional area smaller and causes mistakes during operation.
After the melting of the high -voltage flow fuse melt, you need to replace it. The following is a brief introduction to how to replace it:
    1. Before installing a new melt, find the reason for the melting of the melting, without determining the cause of the fuse, and do not disassemble the melt test.
    2. When replacing the new melt, check whether the rated value of the melt is matched with the protected device.
    3. When replacing the new melt, check the internal burns of the fuse. If there is severe burns, replace the porcelain melt at the same time. When the porcelain molten tube is damaged, it is not allowed to replace it with other materials. When replacing the melting of the filling fuse, pay attention to filling the filler.